Supertech Toyota/Sicon Manganese Bronze Exhaust Valve Guide 5.5mm Stem - Set of 8

This is a set of eight Supertech exhaust valve guides, made from manganese bronze and designed for a 5.5mm stem. These guides are crucial for the proper operation of your engine's valves, ensuring they move smoothly and seal correctly within the cylinder head. Manganese bronze is a well-known material for valve guides because it offers good wear resistance and lubricity, which helps reduce friction and heat buildup during operation.

Replacing your valve guides is often part of a larger engine rebuild or repair, especially if you're noticing oil consumption issues or valve sealing problems. The 5.5mm stem size is specific to certain Toyota and Sicon engine applications, so it's important to confirm this is the correct size for your build. Having a fresh set of guides ensures your new valves will seat properly and operate without excessive wear.